Improvement in machines for trimming the heels and soles of boots and shoes



Maclhi-nes for Trimming the'HeIs and Soles;l v01'@ Boots and Shoes.

2 Sheets--Sheet2.A

y A R. G. LAMBART.

Machines for Trimming the Heelsa-'nd Soles of Boots and Shoes.`

Patentedlune 23,1874.

W1) messes l W1 Q yf/W79 UNITED STATES PATENT OFFICE.

RICHARD C. LAMBART, OF QUINOY, ASSIGNOR OF ONE-HALF HIS RIGHT TO FRED S.POTTER, OF NEW BEDFORD, MASSACHUSETTS.

IMPROVEMENT I N MACHINES FOR TRIMMING THE HEELS AND SOLES OF BOOTS ANDSHOES.Y

Specification forming part of Letters Patent No. 152,388, dated J une23, 1874; application filed May 6, 1874.

To all 'whom it may concern:

Be it known that I, RICHARD C. LAMBAET, of Quincy, in the county ofNorfolk and State of Massachusetts, .have invented certain new anduseful Improvements in Machines for Trimming the Heels and Soles ofBoots and Shoes, of which the following, taken in connection with theaccompanying drawings, is a specification My invention relates to thatclass of heel and sole trimming machines iuwhich a rotary cutter is usedfor reducing the heel o r sole edge to the proper form and size, andparticularly to the manner of gagin g the cutter, and to theconstruction and arrangement of the jack for supporting the shoe; and itconsists, first, in the use, in combination with a rotary cutter, of oneor more pairs of gages, so arranged with relation thereto as topartially embrace said cutter and present two points of bearing for thesole or heel to each pair of gages, said gages also being so arranged asto bear against the sole or heel to gage the depth of the cut, the gagesupon one side of said cutter being adjusted to bear against the edge ofthe sole or heel before it reaches the cutter, while the gages upon theother side of said cutter are adjusted to bear against the edge of thesole or heel after it has left the cutter, the variation in theadjustment in the two gages of any pair determining the depth of cutmade by the cutter at that point. My invention further consists in socombining a pair of gages arranged to partially embrace or inclose saidcutter, and one or more gagerollers arranged to rest upon thetreadsurface of the heel, and thus determine the position of the heelvertically, that said gages and the rolls may be adjusted vertically atone time and by the same operation. My invention further consists in theuse of a jack for supporting the boot or shoe, consisting of a rod orstandard, having its lower end stepped upon and secured to the base ofthe frame nearly in a direct line under the outer edge of the cutter bymeans of a ballandsocket joint, a sleeve adjustable thereon to vary thelength of said jack-rod to adapt it to variations in the depth of thelasts, and a jack-head, having attached thereto by a balland-socketjoint a pin o r stud, to be inserted in a hole in the last, said jack-head being' mounted upon a spring in such a manner that it will yieldto adapt itself to slight variations in the thicknesses of the heels. Myinvention further consists in the combination of a jack, constructed andarranged to yield to slight variations or unevenness in heels, and oneor more gage-rollers, arranged to bear upon the tread-surface of theheel, and to be adjusted, mechanically, in a vertical direction to adaptthe machine to thick or thin heels. My invention further consists in apeculiar arrangement of springs for controlling the position of thejack, as will be further described.

In the drawings, Figure 1 is a front elevation of amachine embodying myinvention. Fig. 2 is a side elevation of the same, with a portion of thejack and the upper frame in section. Fig. 3 is a horizontal sectiononline on Figs. 1 and 2.,I Fig. et is a horizontal section on line y yon Figs. 1 and 2, looking up, and drawn to an enlarged scale, to showmore clearly the relative position of the gages to the cutter; and Fig.5 is a diagram drawn to the same scale, and showing the relativebearings upon the heel-blank of the two pairs of gages.

A is a column, provided with a broad base, and to the top of which isbolted the frame B, in which is mounted, in a vertical position, theshaft or spindle C, to the lower end of which is secured the cutter headD. The spindle O is provided with the grooved pulley E, by means ofwhich and the belt F, passing over the idle pulleys G G and around thedriving-pulley H, rotary motion is imparted to the cutter in an obviousmanner. In the cap I of the lower bearing of the spindle C is mountedthe gage-bar J, in such a manner that it may be moved up or down bymeans of the screw a, which is Iitted to revolve in a bearing formed inthe cap K of the upper bearing of the spindle O, said screw beingprovided with the hand-wheel L, by which it may be operated. Thegage-bar J is so fitted to its bearing that while it may be moved end-Wise therein it cannot be rotated; and it has l mounted upon itslowerend, which is enlarged for the purpose, the gage-rollers b b, oneor more, which rest upon the tread of the heel or sole, and by theirlocation determine the position ot' said tread relative to the cutter.To the lower end oi' the gage-bar J are also attached the gages c andc', so arranged with relation to the rollers I) I) and the cutter-headl) that they shall partially embrace or inelose a portion of the cutternear its upper end and toward the Jfront side thereof, in such aposition that when the heel L is presented to the action of the cutter,as shown in dotted lines in `Figs. 2 and 5, said gages will beinposition to be pressed against by the edge of the outer or tread lift d,and liniit the depth of the chip to be cut therefrom by the cutter D.

Near the lower end of the eutter-liead D are located the gages e and c',arranged to partially embrace the cutter-head, and secured to the frameB in such a position that when the heel L is presented to the action ot'the cutter the edge oi' the heel portion ot' the outer sole shall bearagainst the gages c and c, as shown in Figs. 2 and 5, and in trimmingthe edge of the sole said gages will bear against the edge of the sole,one upon the untrimmed portion, and the other upon the trimmed oriinished portion, the gages e, c', e, and c being so secured to theirsupports by the holding-boltsff, and controlled by the set-screws g,that either ot' said gages may be adjusted toward or from the cuttersindeliendently of the others. M is a rod, provided with a ball upon itslower end, fitted to and inelosed in the socket N, formed upon the baseof the column A, in a well-known manner, and provided with ascrew-thread at its upper end, upon which is screwed theextension-sleeve O and the cheek-nut wheel l), in such a manner that thesleeve may be adjusted upon the rod M, and secured in the desiredposition by said nut. Q is the jack-head, fitted to a suitable bea-ringin the upper end of the sleeve O, and resting upon the spring h,inelosed within said sleeve, in such a manner that it may yield slightlyto pressure applied thereto from above, and having fitted to its upperend, by a ball and-socket joint, the pin lt, which is designed to entera hole in the last provided for the purpose. S S are two leaf-springsattached to the columns A, the outer ends of which rest against the rodM, upon opposite sides thereof, as shown in Fig. 3, and tend to hold thejack in a perpendicular position in one direction. T is a spiral springconnected at one end to the eolnmn A, and at the other to the rod M, thetension of which serves to hold the shoe mounted upon the pin R incontact with the gages c, c', e, and c while the shoe is being turned orfed forward by the hand of the operator, to bring the various parts ofthe edge of the heel or sole to the action ot' the cutter.

,By the use of my improved machine, all necessity ot'a pattern todetermine the shape of the tread of the heel is done away with, and allcontact of the gages with the upper of the boot or shoe is avoided, theouter or tread lift of the heel and the edge of the outer sole being thepatterns which determine the shape of the heel and sole, it being, ofcourse, essential to the proper working of my machine that said liftsand soles should be eut by dies of the desired shape in outline that thesole and tread ofthe heel are to have when finished, but slightlylarger, to allow for trimming.

rlhe form or style ot the heel may be varied by changing the relativesize of outer or tread lift, as compared to the size of the heel-seat,and by varying the form ot' the cutters.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

l. In combination with a rotary cutter for trimming the edges of bootand shoe soles or heels, the gages e and e', one or both arranged withrelation to the cutter as set forth, and to gage the cut of the cutterby bearing against the edge of the sole or the inner lift of the heel,substantially as described.

2. In combination with a rotary cutter for trimming boot and shoe heels,the two pairs of gages c and c and e and e', arranged to partiallyembrace or surround the cutter and gage the depth of its eut by bearingupon the outer and inner lifts of the heel, substantially as described.

3. The adjustable gage-bar J, in combination with one or more rollers,b, to rest upon the tread-surface ofthe heel, all as shown anddescribed.

4. The adjustable gagebar J and rollers b, in combination with gages cand c', all as and for the purpose set forth.

5. rlhe jack-rod M, connected at its lower end by means of aball-and-socket or universal joint to any suitable xed support, andprovided with the extension-sleeve O and checknut'l), in combinationwith the last-pin It, attached to the upper end of the sleeve O by meansof a ball-and-socket or universal joint, substantially as described.

6. In. combination with the vertically-adj ustable gage-rolls b,thejaek-head Q and the pin It, mounted upon a spring, substantially asdescribed, for the purpose specified.

7. The springs S S and T, in combination with the jack for holding theboot or shoe, all constructed and arranged substantially as described.

Executed at Boston this 80th day of April, 1874.

i lt [UHARD C. LAMBART.

'itnesses:

WM. l. EDWARDS, S. A. lVooD.

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